Had one of these for about four years now, and it held up well enough, so we bought two more for the other cat boxes. It's got two layers to it, so the litter falls through the mesh and gets held by the non-perforated bottom. It catches the litter fine and you have to take it outside and shake it out once in a while, but it's better than a crunchy floor and getting litter stuck to your feet every time you walk in the room. Also keep them from dragging the litter on their paws out of the laundry room into the kitchen and living room, which is a huge plus since it means we don't get sand trails through half the house anymore.Haven't put them in the washer yet, even though it says you can, but then our cats haven't ever dropped anything but dry litter from their paws as they get out of the box, so it's fine.Our cats don't claw at the litter mats, just rub their paws after going to the box, so I can't say if it'd hold up to rough use, but if your cat's not a claw crazy after potty mountain lion, they're pretty good.
Rating: [4 of 5 Stars!]